Dry glazing process



Feb. 7, 1933. F. W1LDE 1,896,929

-DR Y GLAZING PROCESS Filed Jan. 12, 1951 Inventor 'eafye F Wide Atiomey Patented Feb. 7, 1933 TED] ST S enonen 1 'WILDE, or'xn ron r, New JERSEY DRY enazme'rnocnss J "Applicati onfflled .Tanuaryy12, 1931." Serial No. 508,253.

My present invention'relatesto a process of applying glazes toceramic articles, such as pottery, tiles and the like, and making the. c articles ready for firing.

5 The said process may be carried out by means of the apparatus isclosedand, claimed in Letters Patent 1,792,788 of February 17,

1931 to myself andBennet K.,Eskesen.' It

a may, however, be carried out by otherforms of apparatus,

The object of the invention constituting the subject of this application is to improve upon the products obtainable by presently known methods of applying glazes to ceramic '15 articles preparatory to firing, by providing a simplified, novel process which involves fewer and less troublesome and expensive operations, and which I term a process'of dry glazing of ceramic articles, and which results not only' in'a marked saving in time and material and amount of machinery required but also in a product of superior quality and uniformity. v a a This and other objectsrof the invention,i ts

2'5 nature, and its composition and arrangement and combination of parts and the steps and operations and their sequence involved will be readily understood by any one acquainted with the art to which this invention relates upon considering the following description and explanations and the appended drawing. The drawing shows a side elevational view partly in section of a glaze applying machine a which may be used to carry out the process of the invention.

ployed in carrying out my process and it is my intention to claim the process only, whether carried out manually or by a suitable machine. The machine described and alluded to herein is brought into this application only for the sake of clarity in explaining the steps and operations of'my process and their sequence.

The process constituting my invention consists broadly in coating the face of a ceramic article with an adhesive such as glue, water,

oil or the like, distributing evenly a quantity of pulverized glaze material on a resistant surface to the desireddepth, and pressingthe face of the article upon the surface to cause the glaze to adhere to the face of'the article. The same result may be'achieved'in an inferior manner by applying to the f'ace of a ceramic article a coating of adhesiveand then sieving or otherwise depositing a coating of gla'zexmaterial thereon. I 5

The resistant surfacemay beeither elastic or resilient within practical limits or it may 7 be rigid according to the type of glazing to Y be done. The adhesive may be such as todry. into the face of the article and to reappear upon application of the glazing material thereto, or it may be ofjany suitable character not specifically alluded to-herein, since inclaiming the process'herein, I do not'limit myself to' the use of the material alluded to herein, but I include-all andany materials which may be found-to be suitable'for carryingout the process. '1

In the attached drawing er a a1; glazing I 1 7 machine, the numeral 5 designates a suitable 7 frame on which is mountedaconveyor belt (ion longitudinally spaced opposed rollers 7, and'thenumeral 8 refers to a belt tightner idler. vOver the horizontal flight of the confveyor belt '6 at one end of the frame is placed '80 V I a hopper 9 having a synchronized measuring discharge mechanism for evenly dispensing glaze material upon the belt-to .a predetermined depth. Over. the said horizontal flight of the belt inward of thesaidhopper is an adhesive applying belt and :presserroller mechanism 10, It comprises an adhesive reservoir 11 in which the horizontal endless adhesive applicator belt12fruns', a's'eries of tile guides 13 and a pair of pressure rollers '90 18 and 19 placed in successionas shown Over v the end of the conveyor belt 6opposite the hopper 9 is a finishing pressure roller-mechanism 16. A brush 17 contacts the conveyor eltfor removing undesired material therefrom; a v a o a I shall now state how the above described machine may be employed to carryout the V process of my invention in glazingsmall tiles, e such as mosaic tiles, which are'ordinari-ly very diflicult to properly glaze. Of course, it will be understood that in the case of certain forms of tiles, or in the case of other round or curvedor irregularly shaped ceramic articles, the machine used must be provided with means to turn or rollthe ceramic articles in contact withthe glaze applying means.

In using the described.machine,.rthe tiles I are first attached to a sheet of paper or the like in spaced relation to each other.

placed on the tile guides 13 which are arranged to come between the rows of tiles on the sheet. Assuming thatthere isa quantity of adhesive already taken up by the adhesive glaze material in a manner already described.

This contact causes the tile to-pick up a quane tity of glaze: material. -The next step is the Theupperv roller is positioned to engage the passing, by the niovem'ent of the conveyor belt-6, of the tile under thefinishing pressure roller mechanism 16. This mechanism consists ofa pair-oflvertical-ly aligned rollers, the lowerof the rollers being under'the belt 6 and positioned to :slightly elevate the portion of the-belt 6 where the belt passes thereover.

V .bacek ofthe sheet of .tile as it-passes thereunder. Of course, it is obvious the rollers -,cooperate simultaneously to thoroughlyembed the glaze material'in the adhesive coated The sheet of tile is then-faced downwardly and glazing material into the adhesive coating I and finishing the article preparatory to burning the same.

v in a relativelyhorizontaliposition by passing the articleinto pressure Contact; with .a movingadhesive applicator, thenapplying to the adhesivecoveredundersurface of the article ziicoatin-g of powd ered glazing material by placing,theundersurface of the article forci-e bl'y'upona movingelement having an evenly distributed quantity of the glazing thereon, and thenemb-eddi ng the glazing material in the: adhesive coated und ersurface, and finishing theartifcle forfiring by passing the article through :a compressing means :which' acts upon both its upper surface andiits undersurface. 8..-In val process for glazing avcer'a'mic article, the-steps of *applying .anadhesive to the undersu rface of the articlenwhile itis in v a relatively. horizontal position by passing the article into pressure contact 5 with a moving adhesive applicator, then applying-to the ad- 'hesive covered und'ersurface of the artic'le a coatingjo f powdered glazing material'by placing. the undersurface of the article-forcibly upon'a moving element-having an evenly distributed q'rra'ntity ofthe glazing thereon, and

surface, the: embedding ofthel glazing material in the adhesive covered undersurface and the finishingof the article for firing being carried on simultaneously. 7

2 GEORGE F; wrnnn;

finished tile comesofi the conveyor belt be .yond the rollermechanism 1 6. v p Y It3is to be definitely understood that I do not w desiretolimit the-application of this inven tionto the particular modifications set out herein to illustrate the principles and operat-ionof the invention, and any changes maybe H-1ad6=;1Il materials andin structure and arrangement andcooperation' of parts and in the-sequence andduratio'n of steps or opera tions; consistentwith the: spirit and scope of the invention as claimed.

i cal face .d'ownthrough a press for pressing the Having thus described the invention, what .iscl-aimed is 1. A process for glazing ceramic articles glazing-material, then passing the articles it i -I-tt' '=h f it face oi the tile andiby compressing tllQtlle, r i elmony W ereo I a X my slgnature condition and finish the tile for firing. The a uponboth its upper surface and-cits under- 1. .9 

